Parveen Naveed, Jamila Mehnaz Naib, Sitwat Fatima, Sartaj Khan.
Risk factors associated with placenta previa in patients presenting to a tertiary care teaching hospital in Peshawar.
J Med Sci Jan ;20(3):146-8.

Objectives: To identify risk factors associated with placenta previa in patients presenting to a tertiary care teaching hospital in Peshawar. Material and Methods: This was a hospital based descriptive study, conducted at the Department of Obstetrics and Gynaecology, Khyber Teaching Hospital, Peshawar from March 2007 to July 2008. Patients who were diagnosed to have placenta previa by ultrasonography were included in the study. Data was collected using a written, structured questionnaire and analyzed using SPSS. Results: A total of 8253 women had delivery in the study period, of whom 100 patients were diagnosed to have placenta previa. Mean age of the patients with placenta previa was 30 ± 4.66 years. 53% of patients were multigravida and 40% had previous one or more cesarean sections. A slight predominance of male fetuses was found. Conclusions: The most important obstetric risk factors for placenta previa are advanced maternal age, multiparity and previous surgery on the uterus.

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